Recolor Artwork not working in illustator

[defaulttnxjlujdua4y]

I am trying to recolor the background of a vector that I purchased online and it won't let me. The button for "recolor Artwork" is greyed out and I can't click it. What is the reason for this?

The images I was provided with are eps and jpg, do these files not support recoloring?

Thanks

[Ko.Maruyama]

For EPS (vector artwork)

1. Is the background layer locked?

 - Unlock, recolor

2. Is there no background layer (just an artboard)?

  Either:

 - Make shape as bgd, recolor

   Or

 - In Document setup, simulate colored paper, top color choice = simulated paper color (no recolor option)

You can adjust color on .jpg, but you can't use the recolor command.  Maybe Photoshop is better for that kind of color correction.

[defaulttnxjlujdua4y]

Thanks for your reply. So I can see that it is a layer, but when I double click on it as I have done below, there is no option to change the colour, just to rename it? It appears to be unlocked also.

[Ko.Maruyama]

This image completely helps!

It looks like your Rectangle is actually part of a clipping group (here's Adobe's Helpx: https://helpx.adobe.com/illustrator/user-guide.html/illustrator/using/clipping-masks.ug.html)

The giant rectangle may be just cutting off some of those pills.

Open up the group (collapsed image of pills) and check out what's inside there?

[defaulttnxjlujdua4y]

So when I open up the collapsed group it is just all of the pills individually. So I am wanting just to change the colour of the black background to another colour like pink but keep all of the pills the same?