Not everything in your home decor has to be matching colors. Think instead of similar colors, shades and tints of a main color.
Many times we buy older homes we love, but they also need some renovation. Renovations can be costly so you might have to do them over time. You can still make that pink bathtub work by painting the room a slightly darker shade. Bring in some dark green accents and you have a very pretty and sophisticated palette. You might like it so much that you don't do the renovation you thought you wanted.
With the right colors anything is possible. One color in many variations can be a winning look.