fix CustomElementProperty coloring

- can't check data availabilty in isApplicable because it is obtained on demand

CHANGELOG.md

@@ -15,6 +15,7 @@ Note that since we don't clearly distinguish between a public and private interf
 - Add support for download of gzipped files
 - Fix Glycam Saccharide Names used by default
 - Prefer WebGL1 for more Safari versions to avoid broken GPU surfaces rendering
+- Fix ``CustomElementProperty`` coloring not working
 
 ## [v3.13.0] - 2022-07-24
 

src/mol-model-props/common/custom-element-property.ts

@@ -106,7 +106,7 @@ namespace CustomElementProperty {
             factory: Coloring,
             getParams: () => ({}),
             defaultValues: {},
-            isApplicable: (ctx: ThemeDataContext) => !!ctx.structure && !!modelProperty.get(ctx.structure.models[0]).value,
+            isApplicable: (ctx: ThemeDataContext) => !!ctx.structure,
             ensureCustomProperties: {
                 attach: (ctx: CustomProperty.Context, data: ThemeDataContext) => data.structure ? modelProperty.attach(ctx, data.structure.models[0], void 0, true) : Promise.resolve(),
                 detach: (data: ThemeDataContext) => data.structure && data.structure.models[0].customProperties.reference(modelProperty.descriptor, false)