more fixes based on Alex's review

Author: markusvoelter

code/languages/org.iets3.opensource/languages/org.iets3.core.expr.base/models/editor.mps

@@ -6975,7 +6975,7 @@
                         <ref role="37wK5l" to="z60i:~Color.decode(java.lang.String)" resolve="decode" />
                         <ref role="1Pybhc" to="z60i:~Color" resolve="Color" />
                         <node concept="Xl_RD" id="5s1lueTEL7a" role="37wK5m">
-                          <property role="Xl_RC" value="#eeeeee" />
+                          <property role="Xl_RC" value="#000055" />
                         </node>
                       </node>
                     </node>
@@ -7101,8 +7101,8 @@
                       <node concept="2YIFZM" id="5s1lueTELei" role="37wK5m">
                         <ref role="1Pybhc" to="z60i:~Color" resolve="Color" />
                         <ref role="37wK5l" to="z60i:~Color.decode(java.lang.String)" resolve="decode" />
-                        <node concept="Xl_RD" id="5s1lueTELej" role="37wK5m">
-                          <property role="Xl_RC" value="#eeeeee" />
+                        <node concept="Xl_RD" id="4NOdIlYoXcn" role="37wK5m">
+                          <property role="Xl_RC" value="#000055" />
                         </node>
                       </node>
                     </node>