Answers for "input box color css"

add border to input css

border: none;
border-bottom: 1px solid blue;

input backgound color

<input style="background-color: gold;" type="text" value="">

input type color

<div>
    <input type="color" id="head" name="head"
           value="#e66465">
    <label for="head">Head</label>
</div>

css color of input

input{
  background-color: white; /*The color of your choice here*/
}

input type color

<input type="color" value="#f6f82" id="colorPicker">