Purple Party Hat After the endless debate as to what their real colour actually was (magenta, pink, violet, and purple were all common names for its colour), Jagex officially declared it to be purple with the release of RuneScape 2. The Purple Party Hat has the lowest price of all party hats, mostly on account of the aftermath of the dupe being that there were many more Purple Party Hats duplicated than any other colour. The other remaining portion of its lower price is many players don't like the look of it. However, it is still just as commonly bought and sold as any of the other Party Hats.
Red Party Hat Red Party Hats have always been favoured by majority of the RuneScape population, especially with the release of more and more dragon items and their colours matching up. It also is the same colour of Zamorak paraphernalia, which attracts players due to the fact that most players want wrath and destruction, and Zamorak is the god that portrays that portfolio. The Red Party Hat tends to swap in value with the Yellow Party Hat, due to the demands of the people of RuneScape rapidly changing.
Yellow Party Hat The love for the yellow party hat comes from the fact that it looks like a crown and people like to walk around claiming that they're the king (or at least they want new players to think so). Whether you're claiming to be the Lord of Lumbridge or just waltzing around, the yellow party hat looks good with just about any outfit. Its bright colour makes it stand out in a crowd, which is important, for who wouldn't want to be noticed and admired? The Yellow Party Hats price as stated above is constantly swapping with that of the Red Party Hat.
Green Party Hat The Green Party Hat's popularity probably grows due to its colour matching that of what people would like to call "elf colours" and with the new portrayal of elves as a cool and extremely powerful species in the Lord of the Rings Trilogy, the demand for them grows daily. Neon Green is one of my more favorite colours, so naturally I prefer the Green Party hat over all of the others. It too is very bright and vibrant, so the wearer can easily stand out in the crowd if he chooses to do so.
White Party Hat The White Party Hats popularity much like that of the red is mostly because of it matching the colours of Saradomin, who is the god of peace and the god that most players, especially newer ones, are familiar with. It also matches the colour of the legends cape, which is where its popularity first started to increase due to the guild being released before the Saradomin trimmed armour. It also of course is in higher demand due to its availability being less than that of some of the other party hats. Overall, the White Party Hat looks very stylish with outfits that match its colour (white). It is the second most expensive of party hats.
Blue Party Hat Ah, finally the rarest and most expensive of any of the six party hats. The Blue Party Hat has the least availability than any of the other Party Hats. It has very bright colours, so it too can stand out in a crowd. Many consider it to be the best looking of all the party hats, which I can't say I agree on but then again, I'm not the RuneScape public. Combinations with it and items of similar colour such as mage boots, wizard robes, and wizard skirts make the wearer look quite stylish; another strange combination is wearing mage boots and the split bark chest plate and legs with it. As stated earlier, it is the most expensive of all party hats, and has remained so for quite some time.