Well lets do this chat  
we can feel the vibe that is going through current chapter, and people in this sub will say that the next colour of haki is Love adjacent 

but now lets speak about difficulty, we are using english language trying to predict japan literature, thats crazy if you ask me, and fit to be placed on laughtale

so without further ado, love is either suki, ai or koi. But if you try that and introduce something like sukishoku, aishoku, or koishoku, teenager in japan will look at you weird and brand you as weird uncle. so lets not do that.

first let us see the pattern  
1. 武装色の覇気 (Busoshoku) (haki is the same throughout so lets emit that, shoku is also the same but the word need it pairing)  
武装 means To weild  
and the full translation become Armament

2. 見聞色の覇気 (Kenbunshoku)  
見聞 means to see for yourself, to hear for yourself. or observe  
 full translation also used observation because its fitting

3. 覇王色の覇気 (Haoshoku)  
覇王means to dominate , overwhelm  
full translation  supreme king (this is the most chuni out of 3)

that means in order for love to fit the above, we have to seek it meaning  
Love means to match, to bring balance  
then we just find the word for it, but add chuuni flavour to it since it shounen after all

the result is Harmony or Equilibrium  
next just find the japan word for it  
whoa... we hit like 22 match just for 2 word above  
okay lets just chose any of them since you guys already understand the spirit of this speculation anyway

  
1st. 円満 (enman)  
円満色の覇気 (enmanshoku) which will translate to Haki, Colour of Harmony

2nd choice 均衡 (kinkou)  
均衡色の覇気 (kinkoushoku) which will translate to Haki, Colour of equilibrium (which is very 8th grade syndrome) 

there is also the possibility of chowa and heiwa, both means harmony but the full sentence kinda lacking impact

also im only going for facet of love, Harmony here so the chance of its not it just humongous  
what do you guys think, what kinda flavour of love the next haki reveal gonna be? is it actually gonna be aishoku after all?

Lets try to predict the name of the next haki reveal