Much retro clothing keeps things classic by avoiding overt prints or very bold patterns. If you're after something to break up the block colours, this cute little Butterfly Tunic by Oli could be ideal.
The tunic shape is relaxed and easy to wear, but remains feminine and with a sharp sixties silhouette. A mini-length hemline and three-quarter length sleeves create that retro shape, made just relaxed enough for daytime by the fabric choice. The butterfly print is not quite authentically vintage, but captures the girlish whimsy of the mid sixties well.
Get it online from Oli for £38.