Autentico paint colours

[Pannacotta]

I bought some of this chalk paint this week and have painted a table in it, the colour was Thunder Sky.
But am not that keen on how it has turned out, its too purple.
Can I paint a different colour on top to darken it?
Can anyone suggest a good dark grey colour in their range?
TIA

[BriocheBriocheBrioche]

Following with interest as I've just ordered 'cement' hoping it will be a nice dove grey!

Did you find it nice to work with?

[Pannacotta]

Yes its easy to use.
Just not wild about the colour.
Its pretty but looks weird against the wall colour....