/* Text-like inputs */
input.form-text,
input.form-email,
input.form-tel,
input.form-url,
input.form-number,
input.form-search,
input.form-password,
input.form-date,
input.form-time,
textarea.form-textarea,
select.form-select {
  background-color: #fff9d9; /* pick your color */
}

/* Optional: keep disabled fields looking disabled */
input[disabled],
textarea[disabled],
select[disabled] {
  background-color: #eee;
}