I've always loved how well monochromatic color schemes work. Here are some suggestions for red, black and grey knitwear, with a modern and futuristic edge. You can play with these pieces any way that you see fit. Use these as suggestions and find items within your budget, or be inspired to create an original hand made piece.

Knitwear designs are listed clockwise, from top:
Fendi black knitted jumper
Louise Goldin Lappet dress
Grey tights
Black tights
Louise Goldin Knit skirt
Striped netting bag
Marled open knit scarf
Non knitwear accessories:
Kova & T black latex leggings
Liberty heels by Nicholas Kirkwood