Support rgb color setting in Slider

[sekzerd]

Hi! I want set rgb color for Slider, but it can't works well.
https://codepen.io/sekzerd/pen/jOozwdK

<q-slider v-model="standard" :min="0" :max="50" color="green"></q-slider> 
    works, but we need set rgb value

<q-slider v-model="standard" :min="0" :max="50" color="rgb(255,0,0)"></q-slider>
    not works, 
    
<q-slider v-model="standard" :min="0" :max="50" style="background-color:rgb(255,0,0)"></q-slider>
    works, but just set background color to rgb(255,0,0)  
    
<q-slider v-model="standard" :min="0" :max="50" style="color:rgb(255,0,0)"></q-slider>
    not works, 
    
<q-btn color="green" label="btn" ></q-btn>
    works, but we need set rgb value
    
<q-btn color="rgb(255,0,0)" label="btn" ></q-btn>
    not works
    
<q-btn style="background-color:rgb(255,0,0)" label="btn" ></q-btn>
    works
    
<q-btn style="color:rgb(255,0,0)" label="btn" ></q-btn>
    works

We can set q-slider color by set deep styles, like set q-primary to rgb value. But It is difficult and inflexible.

*{    
  --q-primary:rgb(255,0,0) !important;
}

So, can we support that setting color to rgb(x,x,x) just set color="rgb(x,x,x) on q-slider?
Anyone have more easy way set q-slider color, please tell me.