Will this add-on work on all devices and browsers ?

So far, I've tested this on samsung-s4, pad-2, ipad-air, lumia windowsphone, desktop, mozilla, safari, opera and others.
If you do find any problems, please contact me with details so I can try to reproduce the error and solve it.

How do I change the color of the description?

You can simply edit the block's design in editmode to change the color, or adapt other block styles.

Can I change the speed of animations ?

Yes, but these speeds depend on the effect. You could:
- add style-rules to a 'HTML' block on your page
- add rules to your theme
- create a template

I have this great effect that I like to share, can it be included to the package?

Yes, contact me about it.