use main color scheme instead of separate canvas scheme

canvas/settings.go

@@ -5,13 +5,11 @@
 package canvas
 
 import (
-	"image/color"
 	"os"
 	"path/filepath"
 	"slices"
 
 	"cogentcore.org/core/base/iox/tomlx"
-	"cogentcore.org/core/colors"
 	"cogentcore.org/core/core"
 	"cogentcore.org/core/styles"
 )
@@ -37,9 +35,6 @@ type SettingsData struct { //types:add
 	// default physical size, when app is started without opening a file
 	Size PhysSize
 
-	// active color settings
-	Colors ColorSettings
-
 	// default shape styles
 	ShapeStyle styles.Paint
 
@@ -76,7 +71,6 @@ type SettingsData struct { //types:add
 
 func (se *SettingsData) Defaults() {
 	se.Size.Defaults()
-	se.Colors.Defaults()
 	se.ShapeStyle.Defaults()
 	se.ShapeStyle.FontStyle.Family = "Arial"
 	se.ShapeStyle.FontStyle.Size.Px(12)
@@ -132,33 +126,3 @@ func (se *SettingsData) Apply() { //types:add
 func (se *SettingsData) EditSplits() {
 	SplitsView(&AvailableSplits)
 }
-
-/////////////////////////////////////////////////////////////////////////////////
-//   ColorSettings
-
-// ColorSettings for
-type ColorSettings struct { //types:add
-
-	// drawing background color
-	Background color.Color
-
-	// border color of the drawing
-	Border color.Color
-
-	// grid line color
-	Grid color.Color
-}
-
-// todo: replace with color tone defaults
-
-func (se *ColorSettings) Defaults() {
-	se.Background = colors.White
-	se.Border = colors.Black
-	se.Grid = color.RGBA{220, 220, 220, 255}
-}
-
-func (se *ColorSettings) DarkDefaults() {
-	se.Background = colors.Black
-	se.Border = color.RGBA{102, 102, 102, 255}
-	se.Grid = color.RGBA{40, 40, 40, 255}
-}

canvas/svg.go

@@ -941,13 +941,13 @@ func (sv *SVG) RenderBg() {
 	}
 	sv.UpdateGridEff()
 	bb := sv.bgPixels.Bounds()
-	draw.Draw(sv.bgPixels, bb, &image.Uniform{Settings.Colors.Background}, image.ZP, draw.Src)
+	draw.Draw(sv.bgPixels, bb, colors.Scheme.Surface, image.ZP, draw.Src)
 
 	pc := &sv.bgPaint
 	pc.PushBounds(bb)
 	pc.PushTransform(root.Paint.Transform)
 
-	pc.StrokeStyle.Color = colors.Uniform(Settings.Colors.Border)
+	pc.StrokeStyle.Color = colors.Scheme.OnSurface
 
 	sc := sv.SVG.Scale
 
@@ -962,7 +962,7 @@ func (sv *SVG) RenderBg() {
 
 	if Settings.GridDisp {
 		gsz := float32(sv.GridEff)
-		pc.StrokeStyle.Color = colors.Uniform(Settings.Colors.Grid)
+		pc.StrokeStyle.Color = colors.Scheme.OutlineVariant
 		for x := gsz; x < sz.X; x += gsz {
 			pc.DrawLine(x, 0, x, sz.Y)
 		}