We are all so different and thank goodness for it but... I love variegation. "Flamingo trees", whether acer or salix and I have both are superb. Eunymous, jasmine, knautia, osteospermum, gaura, phlox, pittosporum, buxus, cornus, ilex, phormium, grasses, astrantia, taxus, pelargonium, arabis, aubretia, agapanthus, galega, canna, aeonium, echiveria, felicia, to name many of the variegated versions of plants I have here. Love 'em! Re a pot for salix flamingo, well they grow fine in pots but the pot needs weight, the compost needs to be weighty (john innes) and it needs to be at least as wide at the base as at the top. Then it makes a real eye catcher evoking complimentary remarks from most everybody Check out local nurseries for agapanthus. Cheap roots in polythene bags will take a few years to make an impact; think of the time wasted, and time is precious and the work involved too. Spend a bit more and buy a potted plant and enjoy it for this year; in summer you can see the flower colour too.