Add option to disable color preview

[ttx]

Hi, i just bought an update and so far is looking good.

Still, there is one thing that bothers me.

In css/less files there are a lot of colors. So while writing code, very often the cursor is (randomly) left on one of these colors.

This:
- disables autocomplete popups
- draws unnecessary attention
- after the mouse cursor is moved, it takes a few seconds to hide. If in this time you switch to a different window (browser, ...) by clicking or Alt+Tab the color preview is visible on top, and it can be hidden only by focusing editor window again and moving cursor over the color.

Screenshot of this from Total Commander:


For this reasons I dont use this feature (but i am forced to). Option to disable it would be nice.

Or maybe you can make it more "live" - show it immediately on hover, hide it the moment the cursor leaves, maybe following the cursor movement will make it feel more responsive.

Or completely replace it with something like this


Thank you.

[Aivars]

I'll write down your concerns and hopefully we can make it be better at hiding. For now just press Esc key when the hint pops up to get rid of it.

[Aivars]

The next update will:
1) hide color hint as soon as you start typing or moving the caret
2) hide any hint when you leave the editor or switch away from the IDE
3) only display color hint if IDE is currently focused