I'd like to change background color for these headers for different color (not white):

Like this:

My models:

from django.core.validators import MinValueValidator, MaxValueValidator
from django.db import models


class Request(models.Model):
    class Method(models.TextChoices):
        POST = "POST", "POST"
        GET = "GET", "GET"
        PUT = "PUT", "PUT"
        DELETE = "DELETE", "DELETE"

    name = models.CharField(verbose_name="Название", null=True, blank=True, max_length=256, help_text="Не обязательно")
    method = models.CharField(
        max_length=10,
        choices=Method,
        default=Method.GET,
        verbose_name="Метод"
    )
    url = models.CharField(verbose_name="Путь", max_length=1024, help_text="Часть после домена, без query-параметров")

    def __str__(self):
        return self.name or f"{self.method} {self.url}"


class Response(models.Model):
    name = models.CharField(max_length=128, null=True, verbose_name="Название")
    status_code = models.PositiveIntegerField(verbose_name="Код")
    body = models.JSONField(verbose_name="Тело", blank=True, null=True)
    request = models.ForeignKey(Request, on_delete=models.CASCADE, related_name="responses", verbose_name="Запрос")

    class Meta:
        verbose_name = "Ответ"
        verbose_name_plural = "Ответы"

    def __repr__(self):
        return self.name or f"{self.request.method} {self.request.url}"

    @property
    def query_parameters(self):
        return {param.key: param.value for param in self.params.all()}


class RequestParam(models.Model):
    key = models.CharField(verbose_name="Название", max_length=128)
    value = models.CharField(verbose_name="Значение", max_length=128)
    response = models.ForeignKey(Response, on_delete=models.CASCADE, related_name="params")

My admin.py:

from django.contrib import admin
from django.urls import reverse
from django.utils.safestring import mark_safe

from app.server.models import Request, RequestParam, Response


class RequestParamInline(admin.TabularInline):
    model = RequestParam
    extra = 1


@admin.register(Response)
class ResponseAdmin(admin.ModelAdmin):
    inlines = [RequestParamInline]


class ResponseInline(admin.StackedInline):
    model = Response
    extra = 1
    show_change_link = True
    verbose_name = "Вариант ответ"
    verbose_name_plural = "Варианты ответов"
    fields = ["status_code", "body", "summary"]
    readonly_fields = ["summary"]

    def get_queryset(self, request):
        self.request = request
        return super().get_queryset(request)

    @admin.display(description="Ожидаемый запрос")
    def summary(self, obj: Response):
        url = self.request.build_absolute_uri(reverse("dispatch", query=obj.query_parameters, args=["test"]))
        change_url = mark_safe(reverse("admin:server_response_change", args=[obj.id]))
        return mark_safe(f'{self.request.method} {url}

отредактировать параметры →')


@admin.register(Request)
class RequestAdmin(admin.ModelAdmin):
    list_display = ['id', 'edit', '__str__']
    inlines = [ResponseInline]
    search_fields = ["url"]
    list_display_links = ["edit"]

    @admin.display(description="")
    def edit(self, obj):
        return "Редактировать"

How to achieve this?