Change border color of MUI disabled outline input

I am really struggling to find where this border color is defined. I have inspected the dom but see no border style in any of the input component nor its pseudo elements…

I simply want to lighten the color of the input border to match my theme disabled color.

Here is the code I used and the render.

 <OutlinedInput
      size='small'
      disabled={disabled}
      value={value}
      endAdornment={<InputAdornment position="end">{ctx.user.currency.short}</InputAdornment>}
      inputProps={{ style: { paddingBottom: 4, } }}
      style={{ fontWeight: 700, fontSize: 18 }}
      {...props}
    />

I have tried using <TextField /> but it has the same problem. Could you help me please ?

>Solution :

Add to your css file:

.MuiOutlinedInput-notchedOutline {
  border-color: red !important;
  border-width: 4px !important;
}

here is the output: