Add color swatch to filament select.

[SpaceCaseChris]

Is your feature request related to a problem? Please describe. Yes - I find it difficult to quickly visually identify which spool I've got selected in some cases, and forget to change the filament selection prior to starting a print. This is worsened when the text is truncated within the select.

Describe the solution you'd like I believe that adding a color swatch that you can see in the filament manager's panel would assist in helping the user make more rapid identifications of whether or not the correct spool is selected. User could select the color when creating a new spool, using a hex picker or the like.

Describe alternatives you've considered

• It may actually be beneficial to move display of brand and spool name into the panel itself, as non-input copy, while still allowing the user to quickly swap via select.
• Have also thought about adding user uploaded image / asset to assist (i.e. brand logo, snapshot of roll or a print, etc) but this seems like it may be better for an iteration after adding in the basic color swatch.

Thanks for this great plugin, btw!