Allow each component to have its own colors and default to the global set

sass/form/file.sass

@@ -11,6 +11,8 @@ $file-name-border-style: solid !default
 $file-name-border-width: 1px 1px 1px 0 !default
 $file-name-max-width: 16em !default
 
+$file-colors: $form-colors !default
+
 .file
   @extend %unselectable
   align-items: stretch
@@ -18,7 +20,7 @@ $file-name-max-width: 16em !default
   justify-content: flex-start
   position: relative
   // Colors
-  @each $name, $pair in $colors
+  @each $name, $pair in $file-colors
     $color: nth($pair, 1)
     $color-invert: nth($pair, 2)
     &.is-#{$name}

sass/form/input-textarea.sass

@@ -2,6 +2,8 @@ $textarea-padding: $control-padding-horizontal !default
 $textarea-max-height: 40em !default
 $textarea-min-height: 8em !default
 
+$textarea-colors: $form-colors !default
+
 %input-textarea
   @extend %input
   box-shadow: $input-shadow
@@ -10,7 +12,7 @@ $textarea-min-height: 8em !default
   &[readonly]
     box-shadow: none
   // Colors
-  @each $name, $pair in $colors
+  @each $name, $pair in $textarea-colors
     $color: nth($pair, 1)
     &.is-#{$name}
       border-color: $color

sass/form/select.sass

@@ -1,3 +1,5 @@
+$select-colors: $form-colors !default
+
 .select
   display: inline-block
   max-width: 100%
@@ -39,7 +41,7 @@
     &::after
       border-color: $input-hover-color
   // Colors
-  @each $name, $pair in $colors
+  @each $name, $pair in $select-colors
     $color: nth($pair, 1)
     &.is-#{$name}
       &:not(:hover)::after

sass/form/shared.sass

@@ -1,3 +1,5 @@
+$form-colors: $colors !default
+
 $input-color: $text-strong !default
 $input-background-color: $scheme-main !default
 $input-border-color: $border !default

sass/form/tools.sass

@@ -3,6 +3,8 @@ $label-weight: $weight-bold !default
 
 $help-size: $size-small !default
 
+$label-colors: $form-colors !default
+
 .label
   color: $label-color
   display: block
@@ -22,7 +24,7 @@ $help-size: $size-small !default
   display: block
   font-size: $help-size
   margin-top: 0.25rem
-  @each $name, $pair in $colors
+  @each $name, $pair in $label-colors
     $color: nth($pair, 1)
     &.is-#{$name}
       color: $color