Improvement Request - Make properties in Layer windows drag / drop

Suggestion for improvement:

Make everything in Layers window drag and drop. Meaning you can drag a colour or linetype from one layer to another, giving that layer the same colour/linetype. The same of course applies for materials etc. This could save a lot of time.

Today, to copy the colour of one layer, one needs to manually type in the correct colour numbers (or create a custom colour and reuse that).