diff --git a/.github/workflows/R-CMD-check.yml b/.github/workflows/R-CMD-check.yml
index a9293734..12991761 100644
--- a/.github/workflows/R-CMD-check.yml
+++ b/.github/workflows/R-CMD-check.yml
@@ -62,14 +62,10 @@ jobs:
 
       - uses: r-lib/actions/setup-r-dependencies@v2
         with:
-          extra-packages: any::rcmdcheck, any::remotes, terra=?ignore-before-r=4.1.0, local::.
+          extra-packages: any::rcmdcheck, any::remotes, terra=?ignore-before-r=4.1.0, local::., brownag/soilDBdata
           # upgrade: 'TRUE' ## NB: required to force building of source packages
           needs: check
 
-      - name: Install soilDBdata off GitHub
-        run: remotes::install_github("brownag/soilDBdata", dependencies = FALSE, build = FALSE)
-        shell: Rscript {0}
-
       - name: Install aqp off GitHub  (devel only)
         if: matrix.config.r == 'devel'
         run: |
diff --git a/NAMESPACE b/NAMESPACE
index d4c788e4..3211bc33 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -172,12 +172,12 @@ importFrom(aqp,SoilTextureLevels)
 importFrom(aqp,`depths<-`)
 importFrom(aqp,`site<-`)
 importFrom(aqp,checkHzDepthLogic)
+importFrom(aqp,col2Munsell)
 importFrom(aqp,hzDistinctnessCodeToOffset)
 importFrom(aqp,munsell2rgb)
 importFrom(aqp,parseMunsell)
 importFrom(aqp,pbindlist)
 importFrom(aqp,plotSPC)
-importFrom(aqp,rgb2munsell)
 importFrom(curl,curl_download)
 importFrom(curl,has_internet)
 importFrom(curl,new_handle)
diff --git a/R/estimateColorMixture.R b/R/estimateColorMixture.R
index 911a88f6..43d37362 100644
--- a/R/estimateColorMixture.R
+++ b/R/estimateColorMixture.R
@@ -15,11 +15,13 @@
 #' 
 #' @param wt  fractional weights, usually area of hz face
 #' 
-#' @param backTransform logical, should the mixed sRGB representation of soil color be transformed to closest Munsell chips? This is performed by [aqp::rgb2munsell()] default: `FALSE`
+#' @param backTransform logical, should the mixed sRGB representation of soil color be transformed to closest Munsell chips? This is performed by [aqp::col2Munsell()] default: `FALSE`
 #'
 #' @return A data.frame containing estimated color mixture
 #' @export estimateColorMixture
-#'
+#' 
+#' @importFrom aqp col2Munsell
+#' 
 estimateColorMixture <- function(x, wt = 'pct', backTransform = FALSE) {
   
   ## TODO: account for `backTransform == TRUE`, different return structure
@@ -68,10 +70,9 @@ estimateColorMixture <- function(x, wt = 'pct', backTransform = FALSE) {
   # performance penalty due to color distance eval against entire Munsell library
   if(backTransform) {
     
-    # convert with best available metric
-    ## TODO: once aqp 2.0.2 is on CRAN use col2Munsell()
-    # m <- col2Munsell(mixed.color[, c('r', 'g', 'b')])
-    m <- rgb2munsell(mixed.color[, c('r', 'g', 'b')])
+    # convert sRGB -> Munsell
+    # requires >= aqp 2.0.2
+    m <- col2Munsell(mixed.color[, c('r', 'g', 'b')])
     
     # adjust names to match NASIS
     names(m) <- c("colorhue", "colorvalue", "colorchroma", "sigma")
diff --git a/R/simplifyColorData.R b/R/simplifyColorData.R
index 696cdb43..3652186b 100644
--- a/R/simplifyColorData.R
+++ b/R/simplifyColorData.R
@@ -48,12 +48,12 @@
 #' @param wt a character vector with the name of the column containing color
 #' weights for mixing
 #' @param bt logical, should the mixed sRGB representation of soil color be
-#' transformed to closest Munsell chips? This is performed by `aqp::rgb2munsell`
+#' transformed to closest Munsell chips? This is performed by [aqp::col2Munsell()]
 #' @author D.E. Beaudette
 #' @keywords manip
 #' @export 
 #' @importFrom grDevices rgb
-#' @importFrom aqp munsell2rgb rgb2munsell
+#' @importFrom aqp munsell2rgb col2Munsell
 simplifyColorData <- function(d, id.var = 'phiid', wt = 'colorpct', bt = FALSE) {
   
   # sanity check: must contain at least 1 row
@@ -112,9 +112,9 @@ simplifyColorData <- function(d, id.var = 'phiid', wt = 'colorpct', bt = FALSE)
     mixed.dry <- dry.colors[dry.mix.idx, .SD, .SDcols =  c(id.var, mix.vars)]
     mixed.dry <- mixed.dry[, estimateColorMixture(.SD, wt = wt, backTransform = bt), by = id.var]
     
-    # back-transform mixture to Munsell using best-available method
-    ## TODO: once aqp 2.0.2 is on CRAN use col2Munsell()
-    m <- aqp::rgb2munsell(as.data.frame(mixed.dry[, .SD, .SDcols = c('r', 'g', 'b')]))
+    # convert sRGB -> Munsell
+    # requires >= aqp 2.0.2
+    m <- col2Munsell(as.data.frame(mixed.dry[, .SD, .SDcols = c('r', 'g', 'b')]))
     
     # adjust names to match NASIS
     names(m) <- c("colorhue", "colorvalue", "colorchroma", "sigma")
@@ -151,9 +151,9 @@ simplifyColorData <- function(d, id.var = 'phiid', wt = 'colorpct', bt = FALSE)
     mixed.moist <- moist.colors[moist.mix.idx, .SD, .SDcols =  c(id.var, mix.vars)]
     mixed.moist <- mixed.moist[, estimateColorMixture(.SD, wt = wt, backTransform = bt), by = id.var]
     
-    # back-transform mixture to Munsell using best-available method
-    ## TODO: once aqp 2.0.2 is on CRAN use col2Munsell()
-    m <- rgb2munsell(as.data.frame(mixed.moist[, .SD, .SDcols = c('r', 'g', 'b')]))
+    # convert sRGB -> Munsell
+    # requires >= aqp 2.0.2
+    m <- col2Munsell(as.data.frame(mixed.moist[, .SD, .SDcols = c('r', 'g', 'b')]))
     
     # adjust names to match NASIS
     names(m) <- c("colorhue", "colorvalue", "colorchroma", "sigma")
diff --git a/man/estimateColorMixture.Rd b/man/estimateColorMixture.Rd
index 21442ea2..0ed76807 100644
--- a/man/estimateColorMixture.Rd
+++ b/man/estimateColorMixture.Rd
@@ -11,7 +11,7 @@ estimateColorMixture(x, wt = "pct", backTransform = FALSE)
 
 \item{wt}{fractional weights, usually area of hz face}
 
-\item{backTransform}{logical, should the mixed sRGB representation of soil color be transformed to closest Munsell chips? This is performed by \code{\link[aqp:rgb2munsell]{aqp::rgb2munsell()}} default: \code{FALSE}}
+\item{backTransform}{logical, should the mixed sRGB representation of soil color be transformed to closest Munsell chips? This is performed by \code{\link[aqp:col2Munsell]{aqp::col2Munsell()}} default: \code{FALSE}}
 }
 \value{
 A data.frame containing estimated color mixture
diff --git a/man/simplifyColorData.Rd b/man/simplifyColorData.Rd
index 93926780..6dee766b 100644
--- a/man/simplifyColorData.Rd
+++ b/man/simplifyColorData.Rd
@@ -17,7 +17,7 @@ that is unique among all horizons in \code{d}}
 weights for mixing}
 
 \item{bt}{logical, should the mixed sRGB representation of soil color be
-transformed to closest Munsell chips? This is performed by \code{aqp::rgb2munsell}}
+transformed to closest Munsell chips? This is performed by \code{\link[aqp:col2Munsell]{aqp::col2Munsell()}}}
 }
 \description{
 Simplify multiple Munsell color observations associated with each horizon.