# Fader display issues with some colors \[SOLVED\]

**URL:** <https://forum.electra.one/t/fader-display-issues-with-some-colors-solved/104>\
**Category:** Bug reports\
**Created:** [July 17, 2020, 9:40am UTC](https://forum.electra.one/t/fader-display-issues-with-some-colors-solved/104 "2020-07-17T09:40:31Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![scztt](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.electra.one/scztt/32/55_2.png) [@scztt](https://forum.electra.one/u/scztt)\
**Post date:** [July 17, 2020, 9:40am UTC](https://forum.electra.one/t/fader-display-issues-with-some-colors-solved/104/1 "2020-07-17T09:40:31Z")

</div>

When I set fader colors using the standard palette provided in the editor, everything looks okay:

 ![IMG_20200717_112204](https://europe1.discourse-cdn.com/flex017/uploads/electraone/original/1X/3cf06f3be359a7c672e6c8569ee20f7c4b51003c.jpeg)

However, when I upload a preset using color values I’ve specified myself, they _mostly_ appear correct, except for a few pieces:

- left and right sides of the fader
- the fader background
- background of the number text  
Thee appear as white/grey rather than the color I specified. Here’s what I see with the color “F800”, for example:  
 ![IMG_20200717_112259](https://europe1.discourse-cdn.com/flex017/uploads/electraone/original/1X/badcfe95cb8d87a64433a4e7ba8de4e7fffd67fb.jpeg)

From the screenshots, fader group colors (the dotted line…) appear to handle all colors effectively.

I understand that this may not be supported behavior, but since everything draws correctly EXCEPT for a few pieces of the fader, I thought I would mention the issue in case there was an easy fix.

I can provide the preset JSON, if it’s helpful to reproduce the issue.

---

<div class="post-metadata">

**Author:** ![martin](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.electra.one/martin/32/145_2.png) [@martin](https://forum.electra.one/u/martin)\
**Post date:** [July 17, 2020, 9:57am UTC](https://forum.electra.one/t/fader-display-issues-with-some-colors-solved/104/2 "2020-07-17T09:57:47Z")

</div>

Hi Scott,

Electra currently supports only 6 colours. This limitation is due to support of anti-aliased graphics. When other RGB565 colour is used parts of the graphics affected by the aniti-aliasing default to white. I will upload a JSON schema here so that people who are working with JSON directly have definition of the JSON. We are considering supporting full 16-bit RGB range, but the it comes with a performance penalty. I am currently travelling, so I will be able to provide the JSON schema early next week.

Cheers,

Martin

---

<div class="post-metadata">

**Author:** ![scztt](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.electra.one/scztt/32/55_2.png) [@scztt](https://forum.electra.one/u/scztt)\
**Post date:** [July 17, 2020, 10:15am UTC](https://forum.electra.one/t/fader-display-issues-with-some-colors-solved/104/3 "2020-07-17T10:15:17Z")

</div>

Thanks for the quick response!

I worked around by modifying my preset generation code to only specify colors from the available color palette for the time being, so it’s not a blocking issue. And I definitely understand how it could be difficult to do anti-aliasing on low power device, if you also allow arbitrary color definitions. 🙂