'from' color can be a variable, use the value instead of the potentially not resolved color

Author: ylafon

org/w3c/css/values/color/HSL.java

@@ -50,7 +50,7 @@ public static boolean isColorRelativeValue(CssIdent ident) {
     String output = null;
     CssValue vh, vs, vl, va;
     boolean isRelative = false;
-    CssColor fromValue;
+    CssValue fromValue;
 
     String functionname = "hsl";
 
@@ -127,11 +127,12 @@ public static final HSL parseHSL(ApplContext ac, CssExpression exp, CssColor cal
                 op = exp.getOperator();
                 CssExpression nex = new CssExpression();
                 nex.addValue(val);
-                hsl.fromValue = new org.w3c.css.properties.css3.CssColor(ac, nex).getColor();
+                CssColor c = new org.w3c.css.properties.css3.CssColor(ac, nex).getColor();
                 if ((val == null || op != SPACE) && !exp.hasCssVariable()) {
                     exp.starts();
                     throw new InvalidParamException("invalid-color", ac);
                 }
+                hsl.fromValue = val;
                 exp.next();
                 val = exp.getValue();
                 op = exp.getOperator();

org/w3c/css/values/color/LAB.java

@@ -44,7 +44,7 @@ public static boolean isColorRelativeValue(CssIdent ident) {
     CssValue vl, va, vb, alpha;
     boolean faSet = false;
     boolean isRelative = false;
-    CssColor fromValue;
+    CssValue fromValue;
 
     /**
      * Create a new LAB
@@ -126,11 +126,12 @@ public static final LAB parseLABColor(ApplContext ac, CssExpression exp, CssColo
                 op = exp.getOperator();
                 CssExpression nex = new CssExpression();
                 nex.addValue(val);
-                lab.fromValue = new org.w3c.css.properties.css3.CssColor(ac, nex).getColor();
+                CssColor c = new org.w3c.css.properties.css3.CssColor(ac, nex).getColor();
                 if ((val == null || op != SPACE) && !exp.hasCssVariable()) {
                     exp.starts();
                     throw new InvalidParamException("invalid-color", ac);
                 }
+                lab.fromValue = val;
                 exp.next();
                 val = exp.getValue();
                 op = exp.getOperator();

org/w3c/css/values/color/LCH.java

@@ -47,7 +47,7 @@ public static boolean isColorRelativeValue(CssIdent ident) {
     CssValue vl, vc, vh, alpha;
     boolean faSet = false;
     boolean isRelative = false;
-    CssColor fromValue;
+    CssValue fromValue;
 
     /**
      * Create a new LCH
@@ -94,11 +94,12 @@ public static final LCH parseLCHColor(ApplContext ac, CssExpression exp, CssColo
                 op = exp.getOperator();
                 CssExpression nex = new CssExpression();
                 nex.addValue(val);
-                lch.fromValue = new org.w3c.css.properties.css3.CssColor(ac, nex).getColor();
+                CssColor c = new org.w3c.css.properties.css3.CssColor(ac, nex).getColor();
                 if ((val == null || op != SPACE) && !exp.hasCssVariable()) {
                     exp.starts();
                     throw new InvalidParamException("invalid-color", ac);
                 }
+                lch.fromValue = val;
                 exp.next();
                 val = exp.getValue();
                 op = exp.getOperator();

org/w3c/css/values/color/RGBA.java

@@ -47,7 +47,7 @@ public class RGBA extends RGB {
 
     CssValue va;
     boolean isRelative = false;
-    CssColor fromValue;
+    CssValue fromValue;
 
     public static final CssValue filterAlpha(ApplContext ac, CssValue val)
             throws InvalidParamException {
@@ -225,11 +225,12 @@ public static RGBA parseModernRGBA(ApplContext ac, CssExpression exp, CssColor c
                 op = exp.getOperator();
                 CssExpression nex = new CssExpression();
                 nex.addValue(val);
-                rgba.fromValue = new org.w3c.css.properties.css3.CssColor(ac, nex).getColor();
+                CssColor c = new org.w3c.css.properties.css3.CssColor(ac, nex).getColor();
                 if ((val == null || op != SPACE) && !exp.hasCssVariable()) {
                     exp.starts();
                     throw new InvalidParamException("invalid-color", ac);
                 }
+                rgba.fromValue = val;
                 exp.next();
                 val = exp.getValue();
                 op = exp.getOperator();