Having thought about it. I think I will be staining with the purple seal that then spray with a tinted lacquer. I think this will give a more even colour to the bass.
I expect the Limba to take in a fair amount of the purple stain as it is more porous than the maple what I hope to end up with is a darker perimeter on the bass with the face of the bass being lighter.
Alternatively I may not stain the limb at all and just the maple leaving the limba just to be coloured by the lacquer.
One of the things I tried out on a guitar I stained. To get the stain more consistent over the whole guitar was to give it a soaking in lacquer thinner this did make the stain work better with regard to even colour.
Alan