Well, one old cartoon that could fit is 'The Smurfs'. They have various colors, and there might be blue and pink ones. Another option could be old episodes of 'My Little Pony', which often has colorful characters that might meet your description.
One old cartoon with blue monsters could be 'Monsters, Inc.' The monsters in that have various colors, including blue, and it's full of fun and excitement.
There's 'Monster Rancher', where various unique monsters are a big part of the show.
You might want to check out 'The Grinch.' It's an old cartoon with a monster-like character. The Grinch is grouchy but in an endearing way and the animation is classic.
One classic is 'Monsters, Inc.' It has a bunch of lovable monster characters and a fun story.
Well, one such cartoon could be 'Sailor Moon'. The main characters often wore pink outfits.
There are a few like 'Fairy Tail' where some fairy characters have pink hair. But it's not super common in old cartoons.
One such cartoon was 'Aaahh!!! Real Monsters'. It had a unique and fun take on monster characters.
Often, these girls are shown as being bold and unique. Their hair colors might symbolize their vibrant and unconventional personalities.
The background of blue and pink roses in cartoons often represents a combination of love and imagination. Blue roses might suggest mystery or unattainability, while pink roses typically signify tenderness and affection. So, together, they can set a unique and charming scene.
I think it might be about their adventures and friendship. Maybe they go on fun quests or solve mysteries together.