Fitbit official icons: white or black?

[Giampi71]

I downloaded the official icons from the guide and they appear white with black background. Even opening them with an editor they are the same. However when I add them to my index.gui they turn black. Any idea why?

Thanks and sorry for the stupid question.

[Florian87 · Accepted solution]

Please check this reference from the CSS Guide as the answer to your question:

https://dev.fitbit.com/build/guides/user-interface/css/#grayscale-magic-

As mentioned in the docs, grayscale images can be colored dynamically with the fill property.

[Giampi71]

@Florian87 Excellent, thanks a lot!